Rough translation:

A noted Minister invited to preach at a country kirk was asked by the beadle 'Have you written your sermon?'

When the reverend gentleman replied that he had, the beadle exclaimed -

'I'm really glad because when you folk come here with paper we know the sermon will end at the end of the paper but when you come here with no paper the good Lorn himself has no idea when you're likely to finish!'